Buttonhole-sewing machine.



No. 634,84. Patented Oct. 3, I899. J. GUTMANN, E. FALLER & K. MISCHKE. BUTTONHOLE SEWING MACHINE.

(Application filed Oct. 8, 1898.) (No Model.) l0 Sheets-Sheet l.

m: Ncmus PETERS co. PHOYO-LlrHD" WASHINGTON, n. c.

Patented Oct. 3,1899. J. GUTMANN, E. FALLER & K. MISCHKE.

BUTTUNHOLE SEWING MACHINE.

(Application filed Oct. 3, 1898.)

ID Sheets-Sheet 2.

(No Model.)-

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. Patented on. 3, I899. .1. sum/um, E. FALLEB & K. MISUHKE.

BUTTONHULE SEWING MAGHINE (Application fllsd Oct. 8, 1898.) (No Model.) I0 Sheets-Sheet 3.

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No. s34,|34. Patented Oct. 3; I899. J. GUTMANN, E. FALLERwS. 'K. MISCHKE.

BUTTUNl-IOLE SEWING MACHINE. pp ication Meat. 9, 1898.) (No Mudel.) l0 SheetHhwt 4.

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J. GUTMANN, E. FALLEB &. K. MISCHKE. BUTTDNHOLE SEWING MACHINE No. 634-,I34.

(No Modal.)

No... 634,134. Patented Oct. 3, I899.

a. GUTMANN, E. FALLER & K. mama-z.- BUTTONHOLE SEWING MACHINE.

(Application filed Oct. 3, 1898.) OUB l0 Sheets-Sheet 6,

No. 634,!34. Patented Oct. 3, I899. J. GUTMANN, E. FALLER & K. MISCHKE. BUTTONHOLE SEWING MACHINE.

(Application filed Oct. 3, 1898.)

(No Madel.) l0 Sheets-Sheet 7,

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No. 634,l34. I Patented Oct. 3, I899. J. GUTMANN, E. FALLER &. K. MISGHKE. BUTTONHOLE SEWING MACHINE.

(Application filed Oct. 8, 1898.)

I0 Sheets-Sheet 8,

(No Model.)

No. 634,134. Patented Oct. 3, I899. J. GUTMANN, E. FALLER &. K. MISCHKE'. BUTTONHOLE SEWING MACHINE.

(Appl at nfldOt 8 1898) I0 Sheats-Sheet 9 (No Model.)

[72 van! 014 No. 634,|34. Patented Oct. 3, I899.

J. GUTMANN, E. FALLER & K. MISGHKE.

BUTTONHOLE SEWING MACHINE.

(Application filed on. 3, 189B.)

(No Modal.) l0 Sheets-Sheet l0.

Fries.

JULIUS GUTMANN, OF BERLIN, GERMANY, AND EMIL FALLER AND KARL MISOHKE, OF ZURICH, SWITZERLAND, ASSIGNORS TO THE FIRMA FAB- RIK FUR SPEZIALNAHMASOHINEN, AOTIEN-GESELLSOHAFT, (PATENTE, JULIUS GUTMANN,) OF ZURICH, SWITZERLAND.

euTrom-iona-sewme MACHINE.

SPECIFICATION forming part of Letters Patent No. 634,134, dated October 3, 1899.

Original application filed August 31, 1897, Serial No. 650,162.. Divided and this application filed October 3, 1898. Serial No.

Y 692,529. (NomodeL) To a] Z whom, it ntcty concern:

Be it known that we, JULIUS GUTMANN, residing at Berlin, Germany, and EMIL FALLER and KARL MISCHKE, residingat Zurich, Switzerland,have invented certain new and useful Improvements in Buttonhole-Sewing Machines; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has relation to that type of anism to the Well-known Wheeler & Wilson buttonh'ole-sewin g machine, and whereby the edges of a buttonhole are bound in the usual manner, while its ends are barred by stitches laid parallel to said edges or substantially so.

In the accompanying drawings, Figure l is a side elevation, and Fig. 2 a top plan View, (the overhanginging machine-arm being removed,) of a Wheeler & Wilson buttonholesewing machine provided with our improved mechanism for imparting to the work-holder the movements necessary to the binding of the edges and barring the ends of buttonholes. Fig. 3 is a view similar to Fig. 2, the feed-wheel and other parts being removed. Fig. 4 is a vertical longitudinal section taken on or about on lines a of Fig. 3. Fig. 5 is a detail side elevation of that portion of the workholderactuating mechanism located above the bed-plate of the machine. Fig. 6 is aidetail plan View of the actuating ring or collar for the feed-wheel. Figs. 7, 8, and 9 are detail top and bottom plan views and a side elevation, respectively, of the disks 0 and 0, illustrating their construction and the means for coupling the same together so as to permit disk 0 to reciprocate on disk 0 when uncoupled therefrom. Figs. 10 and '12 are detail top plan views of the system of slides, 'parts being removed in said Fig. 12. Fig. 11 isa section taken on or about on line to w of Fig. 10. Fig. 13 is a detail vertical section taken on or about on line a: a: of said Fig. 10. Fig. 14 is a detail plan view, and Fig. 15 is a section on line 3 y of Fig. 14. Fig. 16 is an under side view of the bed-plate, showing the connecting rod or bar m coupled with the mechanism which imparts reciprocating motion to the work-holder during the barring operation. Fig. 17 is a view similar to Fig. 16, some of the mechanism beingremoved, showing the aforesaid rod coupled with the slide 5 of a system of slides S, connected with the work-holder and adapted to reciprocate the same during the binding operation; and Fig. 18 isa section on line 1; o of Fig. '17.

As clearly shown in Fig. 2, the work-holder, consisting of a transversely-slotted work-support P and a correspondingly-slotted clothclamp and stretcher-plate K, of Well-known construction and hereinafter referred to as the work-holder PK, is arranged to hold the Work with the buttonhole transversely of the bed-plate. The said work -holder is connected with a disk 0, provided in its under face with a cam or heart-shaped groove 0, Figs. 4 and 8, through a system of slides S, and said disk 0 is coupled to a disk O on a feed-wheel Q in such manner as to have reciprocating motion on said disk 0 when uncoupled therefrom. The connection between the parts is also such as to actuate the workholder as follows: Supposing the parts to be in the position shown in Fig. 2 and the needle N to lie close to the right-hand edge above'the near end of the buttonhole to commence the binding of said edge, as the needle N is reciprocated vertically the work-holder P K receives a reciprocating motion crosswise of the buttonhole, arrow I, Fig. 2, and simultaneously therewith a progressive feed motion in the direction of the right-hand arrow of the two arrows II through the left-hand portion 11 of the cam-groove o in cam 0, Fig. 8, thereby forming the zigzag binding-stitches. As the work-holder P K reaches the limit of its progressive feed inotioni. e., the opposite end of the buttonholethe said work-holder will be uncoupled from the system of slides and coupled to a system of levers adapted to reciprocate the work-holder lengthwise of the buttonhole, arrow III, Fig. 2, and simultaneously therewith said work-holder will receive a progressive feed motion crosswise of the buttonhole orin the direction of the lower one of the two arrows IV, Fig. 2, whereby the oif end of the buttonhole is barred by stitches laid parallel with its edges or substantially so. During the barring operation the pin 13, Fig. 11, that works in the cam-groove 0 in disk 0 will lie in the concentric portion 1 3, as indicated at 2, Fig. 8, while the said disk 0, is uncoupled from disk 0 and is reciprocated by the pin. lVhen the off end of the buttonhole is barred, the parts are automatically returned into their first position for the binding of the opposite or left-hand edge of the buttonhole, during which operation the work-holder P K is again reciprocated in the direction of arrow I, Fig. 2, while the direction of its progressive feed motion is reversed by the other portion of the cam-groove 0 in disk 0' and indicated by the left-hand arrow of the two arrows II, Fig. 2. hen said lefthand edge of the buttonhole is bound, the mechanism is again moved to actuate the work-holder P K to bar the near end of the buttonhole, during which operation said workholder will again be reciprocatcd in the direction of arrow III, Fig. 2, and receive a progressive feed motion in the direction of the upper one of the two arrows 1V, and when said end is barred the work-holder will again be in the position of starting.

The stitchforming devices are in construction and operation the same as those of the Vheeler & lVilson machine referred to, and need therefore not be described in detail, while the reciprocating movements crosswise and lengthwise of the buttonhole are imparted to the work-holder, as hereinafter described, from a well-known switch-cam M on the lower machine-shaft 10 and the continuously-vibrated lever M the arm in of which carries a pin that projects into the.groove of said switch-cam M.

As stated above, the work-holder P K receives its feed motion in binding a buttonhole edge from the cam-groove o in a disk 0, in which groove works a pin 1), that carries a roller and is secured to a slide 1), Figs. 10 and 11. The slide p has a guide-block p journaled to its under side, which works in a diagonal groove 19 in a slide 1)", itself provided with a like guide-block that works in a groove 1) of a slide 13 which is guided in a slide 3, which slide 3 and the lower slide .5 guided in suitable ways on the bed-plate G, have motion independently of each other as well as together under the action of two springs 6 t, seated in recesses in slide .9 The described arrangement of slides s s relatively to each other and relatively to the slides 19 p p and their construction being well known and used on' the Wheeler & \Vilson machines will hereinafter be referred to as the system of slides S, the-work-support P being connected to slide 5' through slide p ,to which said work-holder is rigidly secured, as shown in Figs. t and 11.

The reciprocating motion in the direction of arrow I, Fig. 2, in binding is imparted to the work-holder P K by a connecting rod or bar on, adjustably held in a longitudinal slot in the arm on of the aforementioned switchcam lever M, said bar m having at its free end a square pin or stud that projects from its opposite faces and an offset or projection m on its underside. The portion m of the aforesaid pin takes into a slot m in a projecction or shoulder on the under side of the slide 5 of the system of slides S, which is thus reciprocated in the direction of arrow I, Fig. 2, whereby and through the slide .9 of said system of slides the work-holder P K is similarly reciprocated, the bar 011 being held in engagement with the slide s bya spring f, Figs. 17 and 18.

The simultaneous progressive feed motion in the direction of one of the arrows II, Fig. necessary to the formation of the bindingstitches and the binding of a buttonhole edge is imparted to the work-holder PK by one or the other portion 1 1 or 3 3 of the cam-groove 0' in disk 0 through the slide 1) of the system of slides S, as hereinabove stated. The disk 0 is rotated progressively by a disk 0, which, as stated above, is coupled to disk 0' and, through a ratchet-toothed feed-wheel Q, secured to disk 0. The feed-wheel Q receives a progressive rotation from a pawl Q, pivoted to an actuating ring or collar g and held in engagement with the teeth on the feed-wheel by a spring q, said collar being free to oscillate on disk 0, and is connected by a connecting-rod with the arm m of the switchcam lever M Fig. 2, said rod being likewise adjustable in a longitudinal slot in said arm m of lever BF, for purposes well understood, the usual auxiliary pawl, Fig. 2, being pro vided to prevent backward rotation of the feed-wheel. When the work holder has reached the limit of its progressive feed motion in the direction of one or the other of the two arrows II, Fi 2, the pin 19' on slide is about to enter one of the concentric portions 1 3 of the cam-groove o in disk 0, at which time the system of slides is uncoupled from the vibrating lever M and then coupled to the work-holder. The vibrating lever M is uncoupled from slide .9 and coupled to mechanism adapted to reciprocate the work-holder in the direction of arrow III, Fig. 2, as follows: The aforementioned disk 0 has two peripheral projections Z diametrically opposite each other, and the disk 0 is provided with two similar projections t, Figs. 4, '7, 8, and 9, and

when one edge of a buttonhole is bound one of said projections Z will impinge upon a lever Z, Figs. 2 and 3, secured to a pin Z revoluble in an arm Z, secured to a slide The said pin of lever Z carries below the bed-plate G a shifting lever Z the free end of which carries a roller Z in contact with the ledge or projection 'm of connecting-bar m Fig. 16, so that as said lever Z is moved outward by the projection Z the lever Z will move the bar m against the stress of its spring f, so as to disengage the portion 111 of its square lug or pin from the slot m in the projection on the under side of slide 8 and move the portion n of said pin on the opposite side of said bar m into a notch 92 in a link at. One end of this link is pivoted to one end of a link a whose opposite end is pivoted to the under side of the bed-plate G. The other end of link n is pivoted to the arm n of a bell-crank lever N likewise fulcrumed to the under side of the bed-plate. The arm n of bell-crank lever N has at its free end a stud or pin 12 that extends through a slot in and formed transversely of the bed plate, and has secured thereto above said bed-plate a slide 0.

From what has been said above it will readily be seen that the vibration of the lever M will be transmitted through the connecting-bar m to the link at, which latter will receive a reciprocating motion lengthwise of the bed-plate, which motion is transmitted to the slide 1' through the bell-crank lever N so as to reciprocate said slide transversely of said bed-plate, arrow III, Fig. 2. In order that this reciprocal motion of the slide r may be transmitted to the work-holder-P K, they are automatically coupled together as follows, reference being had to Figs. 3, 4E, 10, 12, and 13.

The slide 0" carries a spring-actuated lever a", the spring f of which tends to force said lever toward the slide 0" or downward. The lever 7" extends through a sleeve 4" secured to the slide, in which sleeve is guided a coupling-pin r pivoted to lever 0", which pin under the stress of spring f on lever r is forced downward through a suitable opening in slide 0-, Fig. 4. To 'the work-support P is secured a transversely-slotted plate q, to which are adjustably secured two longitudinallyslotted coupling-plates g by means of set screws g passing through a transverse slot g in said plates, so that the said coupling-plates can be adjusted to the length of buttonhole to be bound and barred. To prevent accidental displacement of the coupling-plates g g on their screws (1 when the work-holder is reci procated, the slotted body of said plates is made thicker than their shanks, and said thicker portion projects into the transverse slot in plate :1 as shown in Fig. 13. When the workholder P K has reached the limit of its progressive feed motion in the direction of one or the other of the two arrows II, Fig. 2,the slot in one or the other of the coupling-plates g or will lie immediately under the coupling-pin 0- which is moved into the same by the action of spring f on lever r, as above stated. The outer or off end of the slide 0' is guided by a pin n projecting from the bed-plate G through a longitudinal slot n in said slide, of sufficient length to admit of the required short reciprocations of said slide necessary to the formation of the barring-stitches. During the operation of binding the edges of a buttonhole it is of course necessary that the slide 0" should be uncoupled from the work-holder P K to allow the same to reciprocate in a direction at right angles to said slide, arrow I, Fig. 2. To this end the lever 4" has at its outer end a pin r bent at right angles and acted upon by a radial arm r on a spindle W, on which is mounted a torsion-springf that tends to turn the said spindle so that the arm 1* will lift the pin 1- and lever 4" against the stress of its spring f and hold the coup ling-pin r out of the path of the couplingplates g The spindle T has a second radial arm or pin r that is held in contact with a pawl 1, adjustable lengthwise on said spindle through the medium of a block 20, Fig. 2, pivoted to a suitable support 21, Fig. 5, in which said spindle is journaled, said block lying in a longitudinal slot 22 of said pawl, which is secured in its adjusted position by means of a set-screw 23. By the means described the coupling-pin r on lever r is held out of the path of the coupling-plates g g on work-holder P K.

In order that the lever r may be automatically released at the proper time and its coupling-pin movedinto engagement with one or the other of the two coupling-plates g q that is to say, at the time when the bar m is uncoupled from slides s and coupled to link a, as above describedthe pawl r is held by the block in the path of the projections l on disk 0, above referred to, so that as one of these projections acts upon lever I to uncouple the connecting-bar from slide 8 of the system of slides S and couple the same with the link a of the appliances that impart reciprocating motion to slide 1* the other projection Z acts upon pawl r and the latter upon the radial ai'm r to turn the spindle 0" against the stress of its torsion-spring f thereby allowing springf of lever 'r to force the same down and its pin into the slot {1 of the con pling-plate g or g lying at the time below said pin. The projections Z have of course sucha peripheral length as to admit of the required number of barring-stitches being formed to bar a buttonhole end.

As hereinbefore stated, during the barring of a buttonhole end the pin and roller 13 on slide 1) of the system of slides S lies in one or the other of the concentric portions 1 3 of the cam-groove 0 in disk 0, and to which pin 19 the reciprocating motion of the work-holder P K is transmitted, so that it is necessary that said disk 0 should be so connected with the disk 0, actuated by the feed-wheel Q, as to partake of said reciprocations of the workholder. The appliances whereby said disk 0' is coupled to disk 0, so as to permit it to reciprocate with the work-holder, are fully described and shown in our application for patent first herein referred to and will need, therefore, but a brief description here, reference being had to Figs. 7 and S.

The disk 0, provided with the cam-groove o, is connected with the disk 0 by means of guide-rails 0, having sliding motion in suitable slots in the disk 0, Fig. 7. 0 0 indicate the spring-actuated coupling-latches,pivoted in suitable recesses in the under side of the disk 0 and working in suitable recesses in the upper face of disk 0, the springs o for said latches 0 0 tending to throw the same outwardly. The coupling-latches are each provided with a substantially square opening 0 having in its inner wall a recess 4:, into which projects a stud 0 on the upper face of disk 0, the opening 0 in the latches being of such diameter as to permit the required reciprocation of disk 0' when the latches are uncoupled from the pins 0 This uncoupling is effected in that the latches when coupled to the studs 0 project beyond the periphery of the disks 0 and O in the path of two rollers A and 0 Fig. 3, on pins secured to the bedplate G and to a bracket 0 Fig. 4, secured to a disk 1) that supports the disks 0 O and feed-wheel Q.

The arrangement of the roller-abntments and coupling-latches relatively to the peripheral projections Z on disk 0 is such that the moment the lever M is coupled with the link 71 and the pawl 11 acts upon spindle r to release the lever r, and thereby bring its coupling-pin into engagement with the slot in one or the other of the coupling-plates g ,the said rollers A and 0 will move the coupling-latches o o inwardly, thereby moving the recesses 4 in the inner edge of the openings in said latches out of engagement with the studs 0 on disk 0 and permit the latter to partake of the reciprocating motion of slide 0' and work-holder P Kin the direction of arrow III, Fig. 2, during the barring operations.

The progressive feed motion in the direction of one or the other of the two arrows IV, Fig. 2, necessary to the barring of a buttonhole end is imparted to the work-holder P K by the aforementioned cam projections't on the periphery of disk 0, Figs. 3, 7, and S, acting upon a roller i on a pin 25 projecting through an oblong slot in the upper slide 3 and rigidly secured to the lower slide 8 of the system of slides S, Figs. 3 and 4, the said slides s 8 being connected to move together, as hereinbefore described, by the springs #25 Figs. d, 12, 14, and 15. In the pin or post works an adj ustingscrew tflthat abu ts against the fixed disk 1), which supports the disks 0 O and feed-wheel Q, whereby the roller t on said pin or post 25 is held in proper position relatively to the peripheral cam projections 15 on said disk 0, as shown in Fig. t.

Having thus described our invention, what we claim as new therein, and desire to secure by Letters Patent, is-

1. In a lmttonhole-sewing machine such as described, the combination with the stitchforming appliances, the work holder, the switch-cam M, the switch-cam lever M mechanism operated by said lever and adapted to impart to the work-holder a reciprocating n10- tion crosswise of the buttonhole, and mechanism adapted to simultaneously impart to said work-holdera progressive feed motion lengthwise of the buttonhole whereby one edge of a buttonhole is bound, of a slide adapted to be coupled to the work-holder, mechanism operated by the aforesaid switch-cam lever and adapted to impart to said slide a reciprocating motion lengthwise of the buttonhole, mechanism adapted to simultaneously impart to said work-holder a progressive feed motion crosswise of the buttonhole a lever adapted to uncouple the switch-cam lever from the mechanism which imparts to the work-holder a reciprocating motion lengthwise of the buttonhole when said work-holder reaches the limit of its progressive feed motion in the same direction and couple the same to the aforesaid slide, and means adapted to simultaneously couple said slide to said Workholder whereby one end of a buttonhole is barred by stitches laid substantially parallel with its edges, substantially as set forth.

2. In a buttonhole-sewing machine such as described, the combination with the stitchforming appliances, the work-holder, the switch-cam M, the switch-cam lever M mechanism operated by said lever and adapted to impart to the work-holder a reciprocating motion crosswise of the buttonhole, and mechanism adapted to simultaneously impart to said work-holder a progressive feed motion lengthwise of the buttonhole whereby one edge of a buttonhole is bound, of a slide adapted to be coupled to the work-holder, mechanism operated by the aforesaid switch-cam lever and adapted to impart to said slide a reciprocating motion lengthwiseof the buttonhole, mechanism adapted to simultaneously impart to said work-holder a progressive feed motion crosswise of the buttonhole a lever adapted to uncouple the switch-cam lever from the mechanism which imparts to the work-holder a reciprocating motion lengthwise of the buttonhole when said work-holder reaches the limit of its progressive feed motion in the same direction and couple the same to the aforesaid slide, means adapted to simultaneously couple said slide to said work-holder whereby one end of a buttonhole is barred by stitches laid substantially parallel with its edges, and appliances organized to repeat the above-described operations, for the purpose set forth.

3. The combination with the stitch-forming appliances, the work-holder and the system of slides S, said work-holder secured to the slide 19 of said system, and means for imparting to said work-holder a progressive feed mo tion lengthwise of the buttonhole; of the switch-cam M, the lever M the connectingbar m provided with a lug engaging a slot m in a projection on the under side of slide 3 of the aforesaid system of slides S, whereby the workholderis reciprocated crosswise at the buttonhole, and the springffor maintaining the engagement of the said lug on bar m with said slot on, substantially as and for the purpose set forth.

4. The combination with the slides p s of the system of slides S, the work-holder P K secured to slide 19 the switch-cam M, the le ver M vibrated thereby and the spring-controlled bar m connected with said lever and provided with a pin projecting from opposite faces at its free end, one portion m of said pin in engagement with a slot m in a projection on the aforesaid slide 5 the slide r adapted to be coupled to the work-holder, the bellcrank lever N whose arm n is connected with said slide 1", the link a the link 92 connecting said link a with the other arm n of said bell-crank lever and having a notch 71 of a shifting-lever adapted to shift the connecting-barm against the stress of its spring to move the part m of its pin out of the slot m of slide 3 and move the part 72 of said pi-n into the notch n of link n, substantially as and for the purpose set forth.

5. The combination with the stitch-forming appliances, the switch-cam M, switch-cam lever M the work-holder, and mechanism operated by said lever to impart to the workholder a reciprocating motion crosswise of the buttonhole, of the feed-wheel Q, the disk 0 secured thereto, the disk 0 connected with the disk 0 and provided with the cam-groove 0 in its under face, the slide 19 of the system of slides S connected with the work-holder, said slide 1) having a pin 19 that projects into the aforesaid cam-groove, the ring q connected with on e of the arms of the aforesaid switchcam lever and the pawl Q pivoted to said ring and engaging the teeth of the feed-wheel Q, substantially as and for the purposes set forth.

6. The combination with the stitch-forming appliances, the switch-cam M, the switch-cam lever M the work-holder, the slide r, intermediate mechanism connecting said slide with said switch-cam leverand adapted to impart to the slide a reciprocating motion lengthwise of the buttonhole, and means for coupling said slide to the work-holder, of the feedwheel Q, mechanism operated by the switchcam lever and adapted to impart to said feedwheel a progressive rotation, the disk 0 secured to the feed-wheel, the disk 0 coupled to said disk 0, and means for uncoupling the same automatically when the slide 0" is being coupled to the work-holder, said disk 0' having the cam-groove 0 in its under face, the slide 19 of the system of slides S connected with the work-holder, said slide 19 having a pin 13' projecting into the aforesaid camgroove, and means for imparting to the workholder a progressive feed motion crosswise of the buttonhole, substantially as and for the purpose set forth.

7. The combination with the work-holder, the plate (1 secured thereto and the couplingplates 1 connected with plate q, the slide 4" carrying the spring-depressed lever '1" and the pin 7' pivoted to said lever and adapted to engage one or the other of the two coupling-plates g g said lever 0* having an an-' gular pin or arm 0* at its free end, the spindle T the torsion-springf thereon, said spindle provided with a radial arm r in engagement with the pin 0' and tending to lift lever r against the stress of its spring under the action of the torsion-spring on spindle T and a second radial arm 0* on said spindle; of the feed-wheel Q,the disk 0 secured thereto and provided with the peripheral projections t and the pawl r in the path of said projections and adapted to act upon the radial arm 1' to turn the spindle 1' against the stress of its torsion-spring, substantially as and for the purposes set forth.

8. The combination withthe stitch-forming appliances, the work-holder, the mechanism forimparting to said work-holder a progressive feed motion lengthwise of the buttonhole and a reciprocating motion crosswise thereof, comprising a progressively-revolving feedwheel having a cam-groove in its under side the system of slides S connecting said camgroove with the work-holder, the reciprocating coupling -bar m coupled to the workholder through one of the slides of said system, means for imparting to one of said slides a progressive motion crosswise of the buttonhole, and mechanism for reciprocating the work-holder lengthwise of the buttonhole; of the disk 0 revolving with the feed-wheel and having peripheral projections l the lever Zin the path of said projections, the shift ing-lever l on the fulcrum of lever Z and act ing on the bar m to uncouple the same from the system of slides and couple it to the mechanism for reciprocating the work-holder lengthwise of the buttonhole, substantially as and for the purpose set forth.

9. The combination with the stitch-forming devices, the work-holder, the switch-cam M, switch-cam lever M the slide 0 and mechanism operated by said switch-cam lever and adapted to impart to the slide 1 a reciprocatin g motion lengthwise of the buttonhole, and means for coupling the slide to the work holder, of the feed-wheel Q operated from the aforesaid switch-cam lever, the disk 0 secured to said feed-wheel and provided with the peripheral cam projections t,the disk 0 provided with the cam-grooves o in its under face, said disk 0 coupled to disk 0, means for uncoupling the said disks when slide r is being coupled to the work-holder, the slide 13 provided with a pin 1) projecting into the cam-groove of disk 0', the slide 19 to which the workholder is secured, the slide 19 connecting slides 19 and the slide 8' connected with slide p the slide 8 connected with slide 5 and the post t carrying a roller I in the path of the cam projection on disk 0, substantially as and for the purposes set forth.

10. The combination with the stitch-forming appliances, the work-holder and the system of slides S, said work-holder secured to the slide pof said system, and means forimparting to said work-holder a progressive feed motion lengthwise of the buttonhole; of the switch-cam M, the lever M the connecting bar 171 provided with a lug engaging a slot m in a projection on the under side of slide 8 of the aforesaid system of slides S, whereby the work-holder is reciprocated crosswise of the buttonhole, the springf for maintaining the engagement of the said lug on bar m" with said slot m and means for disengaging the lug from said slot, substantially as and for the purpose set forth.

11. In a buttonhole-sewing machine, the com bination with the work-holder, a progress ively-revolving feed-wheel, a cam -grooved feed-disk revolving with and reciprocating on said feed-wheel, means for locking the disk against reciprocation, a connection between the work-holder and the cam-groove in said disk, and means for periodically imparting to said worl-:-holder a progressive motion crosswise of the bed-plate and a reciprocating motion lengthwise thereof; of mechanism for unlocking the disk from the feed-wheel when the work-holder is reciprocated and moved progressively, as described, for the purpose set forth.

12. Ina bnttonhole-sewing machine, mechanism for barring the end of a buttonhole, comprising the vertically-reciproeating needle-bar, the work-holder, and mechanism for reciprocating and simultaneously imparting to said work-holder a progressive motion at right angles to the direction of its reciprocation, said mechanism including a two-part cam-grooved progressively-revolving feedwheel, one of said parts capable of reciprocatin g on the other and said work-holder connected with the cam-groove for the purpose set forth.

In testimony that we claim the foregoing as our invention we have hereto signed our names in presence of the subscribing witnesses.

JULIUS GUTMANN. EMIL FALLER. KARL MISCHKE.

Witnesses to the signature of Julius (lutmann:

C. II. DAY, HENRY HASPER.

\Vitnesses to the signatures of Emil Fuller and Karl Mischke:

MoNTz VERTH, EMIL R. KUNZ. 

